YU0U — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving YU0U, decoded by SO8OO in southeastern Poland. 18 FT8 messages attributed to this token as transmitter, on 80m, 60m, 10m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-30.
These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.
SO8OO decoded 18 FT8 messages attributed to YU0U as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (89%), followed by 60 m (6%) and 10 m (6%). In this small sample, the estimated median decoder S/N was +4 dB; no usual signal pattern is inferred.
Overview
Bands
Last attributed message: 2026-08-30 08:47 UTC
Observed FT8 message patterns
- Attributed sample
- 18 messages
- Active dates
- 4 UTC dates
- Estimated median S/N
- +4 dB
- S/N percentile sample
- Too small
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 0, strong (≥ -8 dB) 16.
WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with YU0U in decoded directed-looking exchanges:
Most frequent locator attributed to YU0U
The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.
- Attributed locator
- KN04 · 7 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 608 km (approx.)
- Last such locator decoded
- 2026-08-30 08:47 UTC
A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.
Observed FT8 exchanges
S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.
| Time UTC | Band | YU0U S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 08-30 10:47 | 10m | - / -11 | DL1GLO | -8 / - | 4 | ✓ Closing fragment |
| 08-30 09:47 | 10m | - / -11 | IU1QZR | -18 / - | 3 | Partial capture |
| 08-30 07:46 | 10m | - / -11 | IK6FWJ | +3 / - | 4 | Partial capture |
| 08-07 20:05 | 80m | +8 / -6 | DD8BA | -8 / -1 | 4 | ✓ Full exchange observed |
| 08-07 20:03 | 80m | +9 / -6 | UR0UF | 0 / +10 | 8 | ✓ Full exchange observed |
| 08-07 20:00 | 80m | +2 / -8 | SM7JKW | -4 / +1 | 5 | ✓ Full exchange observed |
| 08-07 19:58 | 80m | - / - | DA6NEL | -20 / - | 4 | Partial capture |
| 07-08 15:37 | 10m | - / - | DL9KM | -10 / - | 5 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 073730 -23 1376 YU0U R6FMK R+06 074630 -7 2790 YU0U IK6FWJ JN63 (x4) 084745 -18 1377 <...> YU0U KN04 094730 -23 1527 YU0U IU1QZR JN45 (x3) 104415 -17 1242 YU0U DO1SHK JO31 104715 -7 2468 YU0U DL1GLO JN47 (x4) 115500 -8 2648 YU0U F4EBT JN18
UTC dB Audio Message 200130 -17 1835 YU0U DA6NEL JO60 200145 -1 984 YU0U SM7JKW 73 200230 +5 2619 DL1RWN YU0U KN04 200315 -2 1443 YU0U UR0UF KO50 200330 +9 2619 UR0UF YU0U +12 200345 -3 1444 YU0U UR0UF KO50 200400 +9 2619 UR0UF YU0U +10 200415 -2 1444 YU0U UR0UF R-06 200430 +8 2619 UR0UF YU0U RR73 200445 +2 1443 YU0U UR0UF R-06 200530 +7 2619 DD8BA YU0U -01 200545 +3 1443 YU0U UR0UF 73 200545 -8 2166 YU0U DD8BA R-06 200600 +9 2619 DD8BA YU0U RR73 200615 -8 2166 YU0U DD8BA 73
Decoder S/N history by band
Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.
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